Cannot cast dtype('uint64') to dtype('int64')

[alex-ruehe]

Python version

Please run the following snippet and write the output here

python=3.10.2 (main, Jan 27 2022, 14:10:02) [Clang 12.0.5 (clang-1205.0.22.9)]
os=macOS-12.6-x86_64-i386-64bit
numpy=1.23.3
asammdf=7.1.0

Code

MDF version

3.10

Code snippet

works

file = MDF('single_channel.1.mdf')
file.get('channel_x', raw=True)

fails

file = MDF('single_channel.1.mdf')
file.get('channel_x')

Traceback

---> 15 renamed.get('channel_x')

File ~/code/dsp-ops-timeseries-etl/venv/lib/python3.10/site-packages/asammdf/blocks/mdf_v3.py:3103, in MDF3.get(self, name, group, index, raster, samples_only, data, raw, ignore_invalidation_bits, record_offset, record_count, skip_channel_validation)
 3101     if not raw:
 3102         if conversion:
-> 3103             vals = conversion.convert(vals)
 3104             conversion = None
 3106 if vals.dtype.kind == "S":

File ~/code/dsp-ops-timeseries-etl/venv/lib/python3.10/site-packages/asammdf/blocks/v2_v3_blocks.py:1568, in ChannelConversion.convert(self, values, as_object)
 1566 X = values[idx]
 1567 new_values = np.zeros(len(values), dtype=np.float64)
-> 1568 new_values[idx] = evaluate(default)
 1570 idx = np.argwhere(idx1 == idx2).flatten()
 1571 if len(idx):

File ~/code/dsp-ops-timeseries-etl/venv/lib/python3.10/site-packages/numexpr/necompiler.py:829, in evaluate(ex, local_dict, global_dict, out, order, casting, **kwargs)
  827 print(arguments)
  828 print(kwargs)
--> 829 return compiled_ex(*arguments, **kwargs)

TypeError: Iterator operand 1 dtype could not be cast from dtype('uint64') to dtype('int64') according to the rule 'safe'

Description

Use the code snippets above to reproduce the issue.

single_channel.1.mdf.zip

Any ideas why this goes south?

[danielhrisca]

@r-xela please try the development branch code

[alex-ruehe]

@danielhrisca Looks like the issue is fixed 👍